.art{
    display: flex;
    flex-direction: row;
}
.left{
    width: 160px;
    background-color: white;
    height: 100vh;
    >ul{
        padding-top: 32px;
        >li{
            height:40px;
            text-align: center;
            line-height: 40px;
            font-size: 14px;
        }
        >li:hover{
            *{
                color: #4299e1;
            }
        }
    }

}